No one won a lawsuit against FDR when he forced citizens to open safety deposit boxes and turn over physical gold for paper T bonds when he made the civilian possession of gold illegal in the USA. The Supremes upheld the confiscation of private property in exchange for printed paper certificates when it was in the national best interest. They also upheld the internment of American citizens indefinitely while the country was in a war footing. It’s absolutely ludicrous to think they would do anything about people being told to stay home during a global pandemic. Any lawsuit will sit for years in waiting if they don’t just immediately dismiss it out of hand. They know the check on POTUS and governors is their houses of legislation that are duly elected.
It seems that many who made strong the point of the nation being a constitutional republic were not actually endorsing such a government but were only using that fact to blow raspberries against those who kept calling it a democracy.